Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4820439 | Washing and cleaning agent containing surfactants, builder, and crystalline layered sodium silicate | — | 1989-04-11 |
| 4806327 | Process for the preparation of crystalline sheet-type alkali metal silicates | Martin Schott | 1989-02-21 |